55772030 has 32 divisors (see below), whose sum is σ = 106682400. Its totient is φ = 20932992.

The previous prime is 55772027. The next prime is 55772063. The reversal of 55772030 is 3027755.

It is a super-2 number, since 2×55772030² = 6221038660641800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55771984 and 55772002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19364 + ... + 22056.

It is an arithmetic number, because the mean of its divisors is an integer number (3333825).

Almost surely, 2^55772030 is an apocalyptic number.

55772030 is a deficient number, since it is larger than the sum of its proper divisors (50910370).

55772030 is a wasteful number, since it uses less digits than its factorization.

55772030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 55772030 is about 7468.0673537402. The cubic root of 55772030 is about 382.0663746217.

Adding to 55772030 its reverse (3027755), we get a palindrome (58799785).

The spelling of 55772030 in words is "fifty-five million, seven hundred seventy-two thousand, thirty".