55157501 has 8 divisors (see below), whose sum is σ = 63290304. Its totient is φ = 47088000.

The previous prime is 55157411. The next prime is 55157521. The reversal of 55157501 is 10575155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55157501 - 2¹⁴ = 55141117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55157521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13940 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (7911288).

Almost surely, 2^55157501 is an apocalyptic number.

It is an amenable number.

55157501 is a deficient number, since it is larger than the sum of its proper divisors (8132803).

55157501 is a wasteful number, since it uses less digits than its factorization.

55157501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31651.

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 55157501 is about 7426.8096111318. The cubic root of 55157501 is about 380.6579115166.

The spelling of 55157501 in words is "fifty-five million, one hundred fifty-seven thousand, five hundred one".