1057155 has 32 divisors (see below), whose sum is σ = 1900800. Its totient is φ = 497280.

The previous prime is 1057129. The next prime is 1057157. The reversal of 1057155 is 5517501.

It is not a de Polignac number, because 1057155 - 2¹³ = 1048963 is a prime.

It is a super-2 number, since 2×1057155² = 2235153388050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7021 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2^1057155 is an apocalyptic number.

1057155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1057155 is a deficient number, since it is larger than the sum of its proper divisors (843645).

1057155 is a wasteful number, since it uses less digits than its factorization.

1057155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 1057155 is about 1028.1804316364. The cubic root of 1057155 is about 101.8699804319.

It can be divided in two parts, 105 and 7155, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 1057155 in words is "one million, fifty-seven thousand, one hundred fifty-five".