155402332 has 6 divisors (see below), whose sum is σ = 271954088. Its totient is φ = 77701164.

The previous prime is 155402323. The next prime is 155402333. The reversal of 155402332 is 233204551.

It is a junction number, because it is equal to n+sod(n) for n = 155402297 and 155402306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155402333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19425288 + ... + 19425295.

Almost surely, 2^155402332 is an apocalyptic number.

It is an amenable number.

155402332 is a deficient number, since it is larger than the sum of its proper divisors (116551756).

155402332 is a wasteful number, since it uses less digits than its factorization.

155402332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38850587 (or 38850585 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 155402332 is about 12466.0471682085. The cubic root of 155402332 is about 537.6329083263.

Adding to 155402332 its reverse (233204551), we get a palindrome (388606883).

The spelling of 155402332 in words is "one hundred fifty-five million, four hundred two thousand, three hundred thirty-two".