55156450 has 12 divisors (see below), whose sum is σ = 102591090. Its totient is φ = 22062560.

The previous prime is 55156441. The next prime is 55156499. The reversal of 55156450 is 5465155.

It can be written as a sum of positive squares in 3 ways, for example, as 48566961 + 6589489 = 6969^2 + 2567^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 551515 + ... + 551614.

Almost surely, 2^55156450 is an apocalyptic number.

55156450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55156450 is a deficient number, since it is larger than the sum of its proper divisors (47434640).

55156450 is a wasteful number, since it uses less digits than its factorization.

55156450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103141 (or 1103136 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 55156450 is about 7426.7388536288. The cubic root of 55156450 is about 380.6554937493.

The spelling of 55156450 in words is "fifty-five million, one hundred fifty-six thousand, four hundred fifty".