155442951 has 12 divisors (see below), whose sum is σ = 237736512. Its totient is φ = 97532736.

The previous prime is 155442907. The next prime is 155442977. The reversal of 155442951 is 159244551.

It is not a de Polignac number, because 155442951 - 2⁶ = 155442887 is a prime.

It is a super-2 number, since 2×155442951² = 48325022031176802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155442451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 507831 + ... + 508136.

It is an arithmetic number, because the mean of its divisors is an integer number (19811376).

Almost surely, 2^155442951 is an apocalyptic number.

155442951 is a deficient number, since it is larger than the sum of its proper divisors (82293561).

155442951 is a wasteful number, since it uses less digits than its factorization.

155442951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015990 (or 1015987 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 155442951 is about 12467.6762469997. The cubic root of 155442951 is about 537.6797463379.

The spelling of 155442951 in words is "one hundred fifty-five million, four hundred forty-two thousand, nine hundred fifty-one".