155630501 has 16 divisors (see below), whose sum is σ = 182515200. Its totient is φ = 131398848.

The previous prime is 155630483. The next prime is 155630533. The reversal of 155630501 is 105036551.

It is a cyclic number.

It is not a de Polignac number, because 155630501 - 2⁶ = 155630437 is a prime.

It is a super-2 number, since 2×155630501² = 48441705683022002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155680501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3701 + ... + 18026.

It is an arithmetic number, because the mean of its divisors is an integer number (11407200).

Almost surely, 2^155630501 is an apocalyptic number.

It is an amenable number.

155630501 is a deficient number, since it is larger than the sum of its proper divisors (26884699).

155630501 is a wasteful number, since it uses less digits than its factorization.

155630501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 155630501 is about 12475.1954293310. The cubic root of 155630501 is about 537.8959056126.

The spelling of 155630501 in words is "one hundred fifty-five million, six hundred thirty thousand, five hundred one".