2156501054 has 4 divisors (see below), whose sum is σ = 3234751584. Its totient is φ = 1078250526.

The previous prime is 2156501029. The next prime is 2156501059. The reversal of 2156501054 is 4501056512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2156501054² = 9300993591806221832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156501059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539125262 + ... + 539125265.

It is an arithmetic number, because the mean of its divisors is an integer number (808687896).

Almost surely, 2^2156501054 is an apocalyptic number.

2156501054 is a deficient number, since it is larger than the sum of its proper divisors (1078250530).

2156501054 is a wasteful number, since it uses less digits than its factorization.

2156501054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078250529.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2156501054 is about 46438.1422324365. The cubic root of 2156501054 is about 1291.9624506240.

Adding to 2156501054 its reverse (4501056512), we get a palindrome (6657557566).

The spelling of 2156501054 in words is "two billion, one hundred fifty-six million, five hundred one thousand, fifty-four".