45551052621 has 16 divisors (see below), whose sum is σ = 68151193920. Its totient is φ = 30066699600.

The previous prime is 45551052559. The next prime is 45551052641. The reversal of 45551052621 is 12625015554.

45551052621 is a `hidden beast` number, since 45 + 551 + 0 + 5 + 2 + 62 + 1 = 666.

It is not a de Polignac number, because 45551052621 - 2¹⁵ = 45551019853 is a prime.

It is a super-5 number, since 5×45551052621⁵ (a number of 54 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45551052641) 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, 8349135 + ... + 8354588.

It is an arithmetic number, because the mean of its divisors is an integer number (4259449620).

Almost surely, 2^45551052621 is an apocalyptic number.

It is an amenable number.

45551052621 is a deficient number, since it is larger than the sum of its proper divisors (22600141299).

45551052621 is a wasteful number, since it uses less digits than its factorization.

45551052621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16703833 (or 16703827 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 45551052621 in words is "forty-five billion, five hundred fifty-one million, fifty-two thousand, six hundred twenty-one".