55974402 has 80 divisors (see below), whose sum is σ = 138625344. Its totient is φ = 16740000.

The previous prime is 55974397. The next prime is 55974407. The reversal of 55974402 is 20447955.

It is an interprime number because it is at equal distance from previous prime (55974397) and next prime (55974407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55974407) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 179827 + ... + 180137.

Almost surely, 2^55974402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55974402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69312672).

55974402 is an abundant number, since it is smaller than the sum of its proper divisors (82650942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55974402 is a wasteful number, since it uses less digits than its factorization.

55974402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55974402 is about 7481.6042397336. The cubic root of 55974402 is about 382.5279333695.

It can be divided in two parts, 5597 and 4402, that added together give a palindrome (9999).

The spelling of 55974402 in words is "fifty-five million, nine hundred seventy-four thousand, four hundred two".