45540861 has 8 divisors (see below), whose sum is σ = 61750560. Its totient is φ = 29845872.

The previous prime is 45540857. The next prime is 45540863. The reversal of 45540861 is 16804554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45540861 - 2² = 45540857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45540863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128470 + ... + 128823.

It is an arithmetic number, because the mean of its divisors is an integer number (7718820).

Almost surely, 2^45540861 is an apocalyptic number.

It is an amenable number.

45540861 is a deficient number, since it is larger than the sum of its proper divisors (16209699).

45540861 is a wasteful number, since it uses less digits than its factorization.

45540861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257355.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 45540861 is about 6748.3969207509. The cubic root of 45540861 is about 357.1086849057.

It can be divided in two parts, 45540 and 861, that multiplied together give a triangular number (39209940 = T₈₈₅₅).

The spelling of 45540861 in words is "forty-five million, five hundred forty thousand, eight hundred sixty-one".