45471531 has 16 divisors (see below), whose sum is σ = 70169600. Its totient is φ = 25653888.

The previous prime is 45471527. The next prime is 45471551. The reversal of 45471531 is 13517454.

It is not a de Polignac number, because 45471531 - 2² = 45471527 is a prime.

It is a super-2 number, since 2×45471531² = 4135320262967922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45471521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12046 + ... + 15363.

It is an arithmetic number, because the mean of its divisors is an integer number (4385600).

Almost surely, 2^45471531 is an apocalyptic number.

45471531 is a deficient number, since it is larger than the sum of its proper divisors (24698069).

45471531 is a wasteful number, since it uses less digits than its factorization.

45471531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27498.

The product of its digits is 8400, while the sum is 30.

The square root of 45471531 is about 6743.2581887393. The cubic root of 45471531 is about 356.9273757912.

Adding to 45471531 its reverse (13517454), we get a palindrome (58988985).

The spelling of 45471531 in words is "forty-five million, four hundred seventy-one thousand, five hundred thirty-one".