71551053 has 32 divisors (see below), whose sum is σ = 121605120. Its totient is φ = 40731120.

The previous prime is 71551043. The next prime is 71551099. The reversal of 71551053 is 35015517.

It is not a de Polignac number, because 71551053 - 2⁶ = 71550989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71551003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65038 + ... + 66128.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^71551053 is an apocalyptic number.

It is an amenable number.

71551053 is a deficient number, since it is larger than the sum of its proper divisors (50054067).

71551053 is a wasteful number, since it uses less digits than its factorization.

71551053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 71551053 is about 8458.7855511297. The cubic root of 71551053 is about 415.1502876597.

The spelling of 71551053 in words is "seventy-one million, five hundred fifty-one thousand, fifty-three".