55740157 has 4 divisors (see below), whose sum is σ = 60807456. Its totient is φ = 50672860.

The previous prime is 55740151. The next prime is 55740193. The reversal of 55740157 is 75104755.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55740157 - 2⁷ = 55740029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55740151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533633 + ... + 2533654.

It is an arithmetic number, because the mean of its divisors is an integer number (15201864).

Almost surely, 2^55740157 is an apocalyptic number.

It is an amenable number.

55740157 is a deficient number, since it is larger than the sum of its proper divisors (5067299).

55740157 is a wasteful number, since it uses less digits than its factorization.

55740157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067298.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 55740157 is about 7465.9330964053. The cubic root of 55740157 is about 381.9935787413.

The spelling of 55740157 in words is "fifty-five million, seven hundred forty thousand, one hundred fifty-seven".