155332402 has 4 divisors (see below), whose sum is σ = 232998606. Its totient is φ = 77666200.

The previous prime is 155332357. The next prime is 155332403. The reversal of 155332402 is 204233551.

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

It can be written as a sum of positive squares in only one way, i.e., 91795561 + 63536841 = 9581^2 + 7971^2 .

It is a super-2 number, since 2×155332402² = 48256310222179208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155332403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38833099 + ... + 38833102.

Almost surely, 2^155332402 is an apocalyptic number.

155332402 is a deficient number, since it is larger than the sum of its proper divisors (77666204).

155332402 is an equidigital number, since it uses as much as digits as its factorization.

155332402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77666203.

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

The square root of 155332402 is about 12463.2420340777. The cubic root of 155332402 is about 537.5522525008.

Adding to 155332402 its reverse (204233551), we get a palindrome (359565953).

The spelling of 155332402 in words is "one hundred fifty-five million, three hundred thirty-two thousand, four hundred two".