54945157 has 4 divisors (see below), whose sum is σ = 54968320. Its totient is φ = 54921996.

The previous prime is 54945127. The next prime is 54945167. The reversal of 54945157 is 75154945.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75154945 = 5 ⋅15030989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54945157 is a prime.

It is a super-3 number, since 3×54945157³ (a number of 24 digits) contains 333 as substring.

It is the 7413-rd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54945127) by changing a digit.

It is a nontrivial repunit in base 7412.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7557 + ... + 12922.

It is an arithmetic number, because the mean of its divisors is an integer number (13742080).

Almost surely, 2^54945157 is an apocalyptic number.

It is an amenable number.

54945157 is a deficient number, since it is larger than the sum of its proper divisors (23163).

54945157 is a wasteful number, since it uses less digits than its factorization.

54945157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162.

The product of its digits is 126000, while the sum is 40.

The square root of 54945157 is about 7412.5000505902. The cubic root of 54945157 is about 380.1688008134.

The spelling of 54945157 in words is "fifty-four million, nine hundred forty-five thousand, one hundred fifty-seven".