155401252 has 6 divisors (see below), whose sum is σ = 271952198. Its totient is φ = 77700624.

The previous prime is 155401231. The next prime is 155401303. The reversal of 155401252 is 252104551.

It can be written as a sum of positive squares in only one way, i.e., 96510976 + 58890276 = 9824^2 + 7674^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19425153 + ... + 19425160.

Almost surely, 2^155401252 is an apocalyptic number.

It is an amenable number.

155401252 is a deficient number, since it is larger than the sum of its proper divisors (116550946).

155401252 is a wasteful number, since it uses less digits than its factorization.

155401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38850317 (or 38850315 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 155401252 is about 12466.0038504727. The cubic root of 155401252 is about 537.6316628605.

The spelling of 155401252 in words is "one hundred fifty-five million, four hundred one thousand, two hundred fifty-two".