621161054 has 4 divisors (see below), whose sum is σ = 931741584. Its totient is φ = 310580526.

The previous prime is 621160957. The next prime is 621161083. The reversal of 621161054 is 450161126.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155290262 + ... + 155290265.

It is an arithmetic number, because the mean of its divisors is an integer number (232935396).

Almost surely, 2^621161054 is an apocalyptic number.

621161054 is a deficient number, since it is larger than the sum of its proper divisors (310580530).

621161054 is a wasteful number, since it uses less digits than its factorization.

621161054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310580529.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 621161054 is about 24923.1028164633. The cubic root of 621161054 is about 853.2338421943.

The spelling of 621161054 in words is "six hundred twenty-one million, one hundred sixty-one thousand, fifty-four".