55157030 has 8 divisors (see below), whose sum is σ = 99282672. Its totient is φ = 22062808.

The previous prime is 55157021. The next prime is 55157033. The reversal of 55157030 is 3075155.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55157033) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2757842 + ... + 2757861.

It is an arithmetic number, because the mean of its divisors is an integer number (12410334).

Almost surely, 2^55157030 is an apocalyptic number.

55157030 is a deficient number, since it is larger than the sum of its proper divisors (44125642).

55157030 is a wasteful number, since it uses less digits than its factorization.

55157030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515710.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 55157030 is about 7426.7779016206. Note that the first 3 decimals coincide. The cubic root of 55157030 is about 380.6568280110.

The spelling of 55157030 in words is "fifty-five million, one hundred fifty-seven thousand, thirty".