45261690 has 16 divisors (see below), whose sum is σ = 108628128. Its totient is φ = 12069776.

The previous prime is 45261659. The next prime is 45261691. The reversal of 45261690 is 9616254.

It is a super-2 number, since 2×45261690² = 4097241163312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45261691) 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, 754332 + ... + 754391.

It is an arithmetic number, because the mean of its divisors is an integer number (6789258).

Almost surely, 2^45261690 is an apocalyptic number.

45261690 is an abundant number, since it is smaller than the sum of its proper divisors (63366438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45261690 is a wasteful number, since it uses less digits than its factorization.

45261690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508733.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 45261690 is about 6727.6808782819. The cubic root of 45261690 is about 356.3774822304.

It can be divided in two parts, 4526 and 1690, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 45261690 in words is "forty-five million, two hundred sixty-one thousand, six hundred ninety".