52142155 has 32 divisors (see below), whose sum is σ = 70479360. Its totient is φ = 36771840.

The previous prime is 52142143. The next prime is 52142171. The reversal of 52142155 is 55124125.

52142155 = T₁₂₃₄ + T₁₂₃₅ + ... + T₁₂₉₈.

It is not a de Polignac number, because 52142155 - 2²¹ = 50045003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227581 + ... + 227809.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^52142155 is an apocalyptic number.

52142155 is a deficient number, since it is larger than the sum of its proper divisors (18337205).

52142155 is a wasteful number, since it uses less digits than its factorization.

52142155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 2000, while the sum is 25.

The square root of 52142155 is about 7220.9524994976. The cubic root of 52142155 is about 373.5909312918.

It can be divided in two parts, 5214 and 2155, that multiplied together give a triangular number (11236170 = T₄₇₄₀).

The spelling of 52142155 in words is "fifty-two million, one hundred forty-two thousand, one hundred fifty-five".