55351972 has 24 divisors (see below), whose sum is σ = 104911352. Its totient is φ = 25401600.

The previous prime is 55351969. The next prime is 55351979. The reversal of 55351972 is 27915355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 55264356 = 296^2 + 7434^2 .

It is not an unprimeable number, because it can be changed into a prime (55351979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6472 + ... + 12352.

Almost surely, 2^55351972 is an apocalyptic number.

55351972 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55351972 is a deficient number, since it is larger than the sum of its proper divisors (49559380).

55351972 is a wasteful number, since it uses less digits than its factorization.

55351972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079 (or 6077 counting only the distinct ones).

The product of its digits is 47250, while the sum is 37.

The square root of 55351972 is about 7439.8905905934. The cubic root of 55351972 is about 381.1047537018.

It can be divided in two parts, 553 and 51972, that added together give a palindrome (52525).

The spelling of 55351972 in words is "fifty-five million, three hundred fifty-one thousand, nine hundred seventy-two".