501142155 has 8 divisors (see below), whose sum is σ = 801827472. Its totient is φ = 267275808.

The previous prime is 501142151. The next prime is 501142177. The reversal of 501142155 is 551241105.

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

It is not a de Polignac number, because 501142155 - 2² = 501142151 is a prime.

It is a super-2 number, since 2×501142155² = 502286919036088050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501142151) 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, 16704724 + ... + 16704753.

It is an arithmetic number, because the mean of its divisors is an integer number (100228434).

Almost surely, 2^501142155 is an apocalyptic number.

501142155 is a deficient number, since it is larger than the sum of its proper divisors (300685317).

501142155 is a wasteful number, since it uses less digits than its factorization.

501142155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33409485.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 501142155 is about 22386.2045688857. The cubic root of 501142155 is about 794.3044190737.

The spelling of 501142155 in words is "five hundred one million, one hundred forty-two thousand, one hundred fifty-five".