451342978 has 4 divisors (see below), whose sum is σ = 677014470. Its totient is φ = 225671488.

The previous prime is 451342963. The next prime is 451342993. The reversal of 451342978 is 879243154.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (451342963) and next prime (451342993).

It can be written as a sum of positive squares in only one way, i.e., 261371889 + 189971089 = 16167^2 + 13783^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112835743 + ... + 112835746.

Almost surely, 2^451342978 is an apocalyptic number.

451342978 is a deficient number, since it is larger than the sum of its proper divisors (225671492).

451342978 is a wasteful number, since it uses less digits than its factorization.

451342978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225671491.

The product of its digits is 241920, while the sum is 43.

The square root of 451342978 is about 21244.8341485642. The cubic root of 451342978 is about 767.0709987782.

The spelling of 451342978 in words is "four hundred fifty-one million, three hundred forty-two thousand, nine hundred seventy-eight".