61621132 has 12 divisors (see below), whose sum is σ = 110751760. Its totient is φ = 29977776.

The previous prime is 61621127. The next prime is 61621151. The reversal of 61621132 is 23112616.

61621132 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61621132² = 7594327817922848, which contains 22 as substring.

61621132 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208032 + ... + 208327.

Almost surely, 2^61621132 is an apocalyptic number.

It is an amenable number.

61621132 is a deficient number, since it is larger than the sum of its proper divisors (49130628).

61621132 is a wasteful number, since it uses less digits than its factorization.

61621132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416400 (or 416398 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 61621132 is about 7849.9128657584. The cubic root of 61621132 is about 394.9813204861.

Adding to 61621132 its reverse (23112616), we get a palindrome (84733748).

The spelling of 61621132 in words is "sixty-one million, six hundred twenty-one thousand, one hundred thirty-two".