53772993 has 6 divisors (see below), whose sum is σ = 77672114. Its totient is φ = 35848656.

The previous prime is 53772991. The next prime is 53773001. The reversal of 53772993 is 39927735.

53772993 is a `hidden beast` number, since 537 + 7 + 29 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 4112784 = 7047^2 + 2028^2 .

It is not a de Polignac number, because 53772993 - 2¹ = 53772991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53772991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2987380 + ... + 2987397.

Almost surely, 2^53772993 is an apocalyptic number.

It is an amenable number.

53772993 is a deficient number, since it is larger than the sum of its proper divisors (23899121).

53772993 is a wasteful number, since it uses less digits than its factorization.

53772993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974783 (or 5974780 counting only the distinct ones).

The product of its digits is 357210, while the sum is 45.

The square root of 53772993 is about 7333.0070912280. The cubic root of 53772993 is about 377.4459212330.

The spelling of 53772993 in words is "fifty-three million, seven hundred seventy-two thousand, nine hundred ninety-three".