252155501 has 4 divisors (see below), whose sum is σ = 271552092. Its totient is φ = 232758912.

The previous prime is 252155467. The next prime is 252155549. The reversal of 252155501 is 105551252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41615401 + 210540100 = 6451^2 + 14510^2 .

It is a cyclic number.

It is not a de Polignac number, because 252155501 - 2⁶ = 252155437 is a prime.

It is a super-2 number, since 2×252155501² = 127164793369122002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252155201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9698276 + ... + 9698301.

It is an arithmetic number, because the mean of its divisors is an integer number (67888023).

Almost surely, 2^252155501 is an apocalyptic number.

It is an amenable number.

252155501 is a deficient number, since it is larger than the sum of its proper divisors (19396591).

252155501 is a wasteful number, since it uses less digits than its factorization.

252155501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19396590.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 252155501 is about 15879.4049321755. The cubic root of 252155501 is about 631.7658537174.

The spelling of 252155501 in words is "two hundred fifty-two million, one hundred fifty-five thousand, five hundred one".