45949621 has 2 divisors, whose sum is σ = 45949622. Its totient is φ = 45949620.

The previous prime is 45949583. The next prime is 45949637. The reversal of 45949621 is 12694954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37039396 + 8910225 = 6086^2 + 2985^2 .

It is a cyclic number.

It is not a de Polignac number, because 45949621 - 2⁹ = 45949109 is a prime.

It is a super-2 number, since 2×45949621² = 4222735340087282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45949921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22974810 + 22974811.

It is an arithmetic number, because the mean of its divisors is an integer number (22974811).

Almost surely, 2^45949621 is an apocalyptic number.

It is an amenable number.

45949621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45949621 is an equidigital number, since it uses as much as digits as its factorization.

45949621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 45949621 is about 6778.6149765273. The cubic root of 45949621 is about 358.1739347053.

The spelling of 45949621 in words is "forty-five million, nine hundred forty-nine thousand, six hundred twenty-one".