88072261 has 4 divisors (see below), whose sum is σ = 88663500. Its totient is φ = 87481024.

The previous prime is 88072249. The next prime is 88072279. The reversal of 88072261 is 16227088.

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 20930625 + 67141636 = 4575^2 + 8194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88072261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88072211) 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, 295396 + ... + 295693.

It is an arithmetic number, because the mean of its divisors is an integer number (22165875).

Almost surely, 2^88072261 is an apocalyptic number.

It is an amenable number.

88072261 is a deficient number, since it is larger than the sum of its proper divisors (591239).

88072261 is a wasteful number, since it uses less digits than its factorization.

88072261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591238.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 88072261 is about 9384.6822535449. The cubic root of 88072261 is about 444.9177325512.

The spelling of 88072261 in words is "eighty-eight million, seventy-two thousand, two hundred sixty-one".