51155010 has 32 divisors (see below), whose sum is σ = 136414080. Its totient is φ = 13641264.

The previous prime is 51154997. The next prime is 51155021. The reversal of 51155010 is 1055115.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94462 + ... + 95001.

It is an arithmetic number, because the mean of its divisors is an integer number (4262940).

Almost surely, 2^51155010 is an apocalyptic number.

51155010 is an abundant number, since it is smaller than the sum of its proper divisors (85259070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51155010 is a wasteful number, since it uses less digits than its factorization.

51155010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189479 (or 189473 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 51155010 is about 7152.2730652569. The cubic root of 51155010 is about 371.2183117530.

The spelling of 51155010 in words is "fifty-one million, one hundred fifty-five thousand, ten".